There's a chess player who holds a Guinness World Record for blindfolded chess
Svetlana Unukom, a Ukrainian chess player, set this record in 1994 by playing 64 games of blindfolded chess simultaneously. She achieved a score of 56 wins, 7 losses, and 1 draw. Unukom's feat was recognized by Guinness World Records and remains a remarkable achievement in the world of chess. Her blindfolded chess games are still studied by chess enthusiasts and experts to understand the intricacies of her mental calculations.